Tired of sacrificing warmth for pack weight on multi-day hikes? Meet your reliable three-season companion: the Cosmic Synthetic 40 Sleeping Bag. Engineered specifically for backpackers who demand maximum warmth without bulk, this mummy bag features innovative CirroLoft synthetic insulation—delivering exceptional compressibility and lightweight performance (just 2 lbs 6 oz regular). Experience cozy comfort down to 37°F (3°C) thanks to its precise ISO-rated design, while the eco-conscious PFC-free DWR finish protects both you and the trail.
Forget cramped toes! The thoughtfully designed natural-fit footbox offers welcome wiggle room after long miles, and a handy internal stash pocket keeps essentials like your headlamp or phone within easy reach. Wrapped in a buttery-soft yet durable 380T nylon taffeta shell, it packs down remarkably small (15″ x 8.5″) into the included compression sack—freeing up crucial space in your pack. Whether you’re tackling spring ridges or autumn basecamps, this lightweight synthetic sleeping bag for backpacking balances warmth, weight savings, and trail-ready durability perfectly.
Choose Regular (fits up to 6′) or Long (fits up to 6’6″) for your ideal fit—both offer identical warmth and compressible convenience. Step onto the trail lighter, sleep warmer, and focus on the journey ahead with gear built for real adventures.
